Every hole stud I've seen has an attachment for attaching a sling. Depends on what you're looking for. You could order one, ask the gun store, or bubba that and use a key ring.
"If you remember nothing else about what Iím about to consider here, remember this: the one and only reason politicians, bureaucrats, and policemen want to take your weapons away from you is so that they can do things to you that they couldnít do if you still had your weapons."ó L. Neil Smith
CNN IS FAKE NEWS